I would wager Will called Rotovac 50 times in his first two months for advice. He gives them no credit.
A good friend of mine started with a Rotovac starter package. He did make between 50 and 100 per hour. The phone help from Rotovac was very good. He called Rotovac at least 20 times the first two months. If he had bought a Mytee---do they have someone at the end of the phone to answer questions all the time? His came with several different Chemicals to get started. It is $30 bucks for a pump up at Home Depot. Oh and Rotovac did not supply his shoes or his underwear either he had to buy them too. So I guess you are right, it doesn't come with everything.
I bought a Mytee M5 for $2,000. I turned that into a two TMs, another portable, a 175, burnisher, RX20, Mytee TRex, RV 360i,
Essentially I turned it into about $50,000. @John LaBarbera has always stood behind all his equipment and Mytee always answered my questions. Just saying.